Easy Cleaning AR Bolt trick: OTiS BONE tool

This video demonstrates John Lovell's preferred method for lubricating an AR-15, prioritizing oiling over extensive cleaning for standard maintenance. Key steps include applying Slip 2000 EWL directly to the Bolt Carrier Group (BCG) through the ejection port and magazine well, ensuring lubrication of vent holes and internal components. The process also covers lubricating the receiver and star chamber, followed by cycling the charging handle to distribute the lubricant effectively.

This video from School of the American Rifle highlights critical manufacturing defects in AR-15 bolt carrier keys, specifically focusing on rough internal bores. Lead instructor demonstrates how a poorly finished carrier key can cause significant friction, premature wear on components like gas tubes, and operational issues, contrasting a problematic new Colt carrier with a well-functioning older model. The expert emphasizes the importance of a smooth bore for reliable function and longevity of expensive parts.

This guide, presented by School of the American Rifle, details how to identify and replace a malformed weld spring in an AR-15 Delta Ring assembly. A misaligned weld spring can cause the gas tube to be pushed off-center, leading to excessive friction or damage to the carrier key and gas tube. Replacing the faulty component ensures proper gas tube alignment and firearm reliability.

This video from Brownells features Steve and Caleb reviewing the Magna-Tip® Screwdriver Set, highlighting its importance as a gunsmithing tool. They discuss the advantages of this modular system, including its versatility, durability, and precision, emphasizing the significance of hollow-ground bits and proper handle selection. The review contrasts the Magna-Tip® system with lower-quality alternatives, explaining how the right screwdriver prevents screw damage and covers the variety of screws encountered in firearms. The presenters touch on essential gunsmithing toolkits and answer viewer questions, providing valuable insights for both professional gunsmiths and hobbyists.

This video provides an "autopsy" of an Anderson Manufacturing Bolt Carrier Group (BCG) that failed after only 150 rounds, specifically noting a "sheared lug." The content focuses on a detailed examination of a firearm component failure, suggesting a deep dive into the mechanical aspects and potential causes of the malfunction. This is highly relevant for firearm owners and those interested in the reliability and build quality of AR-15 platforms and their components.

This guide details the evolution of AR-15 carrier key staking from early 'Gen 1' square staking to modern 'Gen 5' OCKS with serrated heads. It emphasizes proper torque values (vintage 35-40 in-lbs, modern 55-58 in-lbs) and the importance of sufficient metal displacement for screw security. The video, presented by an expert from School of the American Rifle, critiques commercial staking and references historical technical manuals.

This Walther PPK/S review highlights its return to the market, featuring a hybrid American frame and German slide to bypass import restrictions. The .380 ACP pistol boasts a classic design with integrated sights, a DA/SA trigger, and a slide-mounted safety/decocker. It includes two magazines, one with a finger rest, and a unique extended beavertail to prevent slide bite.

This AR-15 build, featuring high-end components like F1 Firearms receivers and a POF Dictator adjustable gas block, suffers from short-stroking malfunctions. Despite an open gas block and lightweight parts, it fails to cycle reliably. The speaker investigates potential issues with the buffer system and carrier group, highlighting the complexity of tuning lightweight AR builds.

The Bersa TPR9C is a modern 9mm evolution of the classic Thunder series, offering a compact design suitable for concealed carry and self-defense. It features a smooth DA/SA trigger with a short reset, ambidextrous controls, and a tactical ledge sight for one-handed racking. The firearm demonstrates good ergonomics and full case support in the chamber.

This review covers the Smith & Wesson Performance Center Pro Series Compact 1911 in 9mm, highlighting its 8+1 capacity, bull barrel, and scandium frame. The firearm features a slim profile, ambidextrous safety, and a rounded butt for concealed carry. While the trigger is noted as suitable for carry, caution is advised with reloads due to a partially unsupported chamber.